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Numerical simulation on groundwater contamination by organoarsenic compounds in Kamisu City, Ibaraki Prefecture, Japan
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- WATANABE Shunichi
- Graduate School of Systems Engineering, Wakayama University
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- EGUSA Nobuyuki
- Department of Environmental Systems, Wakayama University
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- HIRATA Tatemasa
- Wakayama University
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- YOKOYAMA Naohide
- Department of Environment and Agriculture, Kanagawa Prefecture
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- YAMAZATO Yousuke
- Koken Ltd.
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- MORITA Masatoshi
- Department of Biological Resources, Ehime University
Bibliographic Information
- Other Title
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- 茨城県神栖市で起きた有機ヒ素化合物による地下水汚染機構の解明に関する数値解析
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Description
Groundwater contamination by organoarsenic compounds in Kamisu City, Ibaraki Prefecture was examined based on the findings of 3D numerical simulations. A primary contaminant was Diphenylarsinic acid. A small-scale numerical simulation evaluated transport processes of DPAA within the aquifer around a drinking water well where the contamination was first detected. The simulation results revealed that DPAA that leached from concrete-like blocks moved to the bottom of the aquifer due to density flow, and then was transported horizontally toward the drinking water well by groundwater flow. These results suggested that the blocks were the most probable source of the well contamination. Furthermore, a large-scale numerical simulation was carried out in order to evaluate transport processes of DPAA in the whole study area. As a result, it was suggested that groundwater extraction from industrial wells located downstream of the study area had limited the spread of the groundwater contamination until the operation stop of the some industrial wells.
Journal
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- Japanese Geotechnical Journal
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Japanese Geotechnical Journal 6 (2), 383-394, 2011
The Japanese Geotechnical Society
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Keywords
Details 詳細情報について
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- CRID
- 1390282680233682432
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- NII Article ID
- 130004482858
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- ISSN
- 18806341
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- Text Lang
- ja
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- Article Type
- journal article
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed